remove unnecessary NodeField annotations in write variable hierarchy

...n/src/com/oracle/truffle/r/nodes/builtin/base/Mapply.java

.../oracle/truffle/r/nodes/access/BaseWriteVariableNode.java

...e/truffle/r/nodes/access/WriteLocalFrameVariableNode.java

...e/truffle/r/nodes/access/WriteSuperFrameVariableNode.java

...fle/r/nodes/access/WriteSuperFrameVariableNodeHelper.java

.../com/oracle/truffle/r/nodes/access/WriteVariableNode.java

...racle/truffle/r/nodes/access/WriteVariableSyntaxNode.java

...des/src/com/oracle/truffle/r/nodes/binary/BinaryNode.java

...nodes/src/com/oracle/truffle/r/nodes/control/ForNode.java

...acle/truffle/r/nodes/control/ReplacementDispatchNode.java

...c/com/oracle/truffle/r/nodes/control/ReplacementNode.java

...es/src/com/oracle/truffle/r/nodes/objects/LoadMethod.java

...rc/com/oracle/truffle/r/nodes/unary/CastToVectorNode.java

.../com/oracle/truffle/r/nodes/unary/ConvertBooleanNode.java